ISO 8398:1989 Preview
Solid fertilizers -- Measurement of static angle of repose
This standard was last reviewed and confirmed in 2013. Therefore this version remains current.
The method is suitable for free flowing materials for measuring angles greater than 20 , but not for those which contain a large proportion of particles exceeding 5 mm in diameter.It consists in measuring of the height and diameter of the base of the cone, obtained by allowing a sample to fall through a fixed distance from a defined funnel onto a horizontal baseplate.
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